/*
 * Copyright 2022 ThoughtWorks, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.thoughtworks.go.addon.businesscontinuity;


import org.apache.commons.io.IOUtils;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.Map;

import static java.lang.String.format;

@Component
public class ViewResolver {

    private String location;

    public ViewResolver() {
        this.location = "/bc-addon/views";
    }

    public String resolveView(String viewName, Map<String, String> modelMap) {
        try (InputStream resourceAsStream = getResourceAsStream(viewName)) {
            String template = IOUtils.toString(resourceAsStream, StandardCharsets.UTF_8);
            for (String modelKey : modelMap.keySet()) {
                template = template.replaceAll(format("<<<%s>>>", modelKey), modelMap.get(modelKey));
            }
            return template;
        } catch (IOException e) {
            throw new RuntimeException(format("Could not resolve html view %s", viewName), e);
        }
    }

    InputStream getResourceAsStream(String viewName) {
        return this.getClass().getResourceAsStream(resolvePath(viewName));
    }

    private String resolvePath(String viewName) {
        return format("%s/%s.html", location, viewName);
    }
}
